THE NEW MEXICO RANGE CATERPILLAR. 



67 



subventral lines, produced largely by an increased number of granules in those 

 regions; secondary hairs small, white. Thoracic feet and anal shield black, the outer 

 sides of the abdominal feet dusky. Spines of the subdorsal row on joints 2 to 12 

 short, with dense black spinules, the lateral and subventral rows longer, slender, with 

 scattered pale spinules. Spiracles white, ringed with black. 



Stage V (fig. 37). — Head rounded, higher than wide, flat in front, clypeus small; 

 smooth, shining dark red, or black. Hairs coarse, white, intermixed with shorter 

 but similar secondary ones even to the vertex; mouth parts and antennas black. 

 Width about 5 mm. Body cylindrical, uniform, normal, the feet equal, the crochets 



Fig. 37. — The New Mexico range caterpillar: Larva, fifth stage. About natural size. (Original.) 



of the abdominal feet dense, in a single line. Ground color yellow, grayish yellow, 

 or black, densely covered with large, flattened, secondary yellow granules, so that the 

 general effect is yellow, subdorsal and lateral lines of granules indistinctly relieved. 

 Thoracic feet and anal plate black; abdominal feet darkly shaded. Secondary hairs 

 short, pale. Subdorsal spines on joints 3 to 12 short, single on joints 12 and 13, no 

 spines on the anal plate; lateral row of joints 2 to 13 and subventral row on joints 2 to 

 12 besides lower subventral row on joints 2, 3, 4, and 11 longer, slender, with more 

 remote spinules. Spinules of the subdorsal row black, with central pale band, the 

 other spinules largely pale. Spiracles white, with a black ring. 



THE PUPA. 



Pupa (fig. 38) rounded, elliptical, obtected, with three movable 

 incisures. The female pupa is thickest through the middle and 

 tapers roundedly both ways, only a little more obtusely so on the 

 anterior end. The male pupa is thickest through the thoracic 

 region and tapers decidedly posteriorly, being bluntly rounded in 

 front. The antenna! cases are very large in both sexes, those of 

 the female only a little smaller than those of the male. Cremaster 

 a blunt, corrugated prominence bearing a group of long spines with 

 thickened, recurved or partly curled tips, which become firmly 

 entangled in the web of the cocoon. 



THE ADULT OR MOTH. 



Fig.38.— The New 

 Mexico range 

 caterpillar: 

 Pupa, lateral 

 view. Enlarged. 

 (Original.) 



Male (figs. 39 and 40). — Antennas with long pectinations, a pair 

 on each segment arising well toward the dorsal aspect, strongly 

 curved, the tips directed downward; a row of single, short, overlapping, ventral 

 serrations. Wings rather short and broad. Head and thorax covered with dense, 

 long hair, gray or clay colored, intermixed with gray and underlaid by dull crimson'. 

 Abdomen red, varying from orange-red to red-brown, darker, more crimson at 

 base, occasionally intermixed with black. Wings generally light clay color, almost 

 whitish, the fore wing crossed by two broad, shaded and diffused, paler and more 

 whitish bands; discal mark narrow, devoid of scales, more or less stained with 

 ocherous and often surrounded by a darker ring. The color of the fore wing varies 

 considerably and may be even of a rather dark gray, in which case the transverse 

 bands are more strongly relieved. Hind wing generally without markings, though 



